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Simplifying 28 + 10r = 3r Solving 28 + 10r = 3r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3r' to each side of the equation. 28 + 10r + -3r = 3r + -3r Combine like terms: 10r + -3r = 7r 28 + 7r = 3r + -3r Combine like terms: 3r + -3r = 0 28 + 7r = 0 Add '-28' to each side of the equation. 28 + -28 + 7r = 0 + -28 Combine like terms: 28 + -28 = 0 0 + 7r = 0 + -28 7r = 0 + -28 Combine like terms: 0 + -28 = -28 7r = -28 Divide each side by '7'. r = -4 Simplifying r = -4
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